Buffer pad



Feb. .6, 1934.

w. a AscH ET AL BUFFER PAD Filed Dec. 17. 1931 2 Sheets-Sheet lINVENTOR-S Feb. 6, 1934.

AT ORNEv Patented .Feb. 6, 1934 UNITED STATES PATENT OFFICE BUFFER PADof Wisconsin Application December 17, 1931 I Serial No. 581,547

4 Claim.

This invention relates tora polishing or surfacing pad for use inpolishing, bufling or finishing surfaces, such asthe bodies ofautomobiles, or the like.

In applying a lacquer or other coating to the surface of an automobilebody or similar machines or other articles, the surface is first primedand 'then asurfacer or filler is applied. The surface being coated mustthen be abraded to remove pits and some portion of the coating to renderthe same smooth and adapt it to receive the finishing coats which, afterbeing applied, are also smoothed down or finished by rubbing orpolishing with a pad of appropriate softness. With prior practices anddevices these operations have involved the expenditure of a great dealof laborious effort and have required quite a bit of time The object ofthe present invention is to provide novel pad or buffer structures whichare adapted to so eficiently carry out these operations as to greatlyreduce the time required and eliminate the necessity of expendinglaborious and fatiguing effort.

Another important object of the invention is to provide polishing orbufiing pads-having these desirable characteristics and which are alsosimple and durable in construction, and adapted to be manufacturedconveniently and economically.

Other objects and advantages reside in certain novel features, of theconstruction, arrangement and combination of parts which will behereinafter more fully described and particularly pointed out in theappended claims, reference being had to the accompanying drawingsforming a part of this specification, and in which:

Figure 1 is a plan view of one type of polishing pad embodying thepresent invention;

Figures 2 and 3 t are similar views showing slightly different types ofpolishing pads embodying the invention;

Figure 4 is a view in transverse section taken on line 4-4 of Figure 1;

Figure 5 is a fragmentary view partly in section and partly inperspective illustrating the first step in the manufacture of a padembodying the present invention; and

Figure 6 is a similar view showing the second step in the process ofconstructing a pad.

In producing a pad embodying the present invention, a layer of fabricdesignated at 1 and which may be the so-called osnaburg, that is, afabric similar to heavy and closely woven burlap, has layers 2, 3, eachconsisting of a mixture of wool and hair applied to the opposite sidesof the layer. The layers 2 and 3 are then thoroughly and completelyneedled or punched through the fabric stay 1. After this operation iscompleted, the resulting structure is doubled upon itself as indicatedin Figure 6, and between 39 the folded portions of the doubled structurea second fabric stay 4 is interposed. The fabric stay 4 is similar tothe fabric stay 1. The structure as shown in Figure 6, that is, doubledupon itself, is then again subjected to a needling operation to projector punch the wool and hair fibers throughthe central stay4 and tothoroughly interlace and interlock the fibers of the several layers withthe several stays. After this operation has been completed, theresulting structure, which is of considerable size, is cut into circularpads, such as shown at P in Figure 1, and the periphery of the padstructure is strengthened by lines of stitching S. The central portionof the pad has a hole H punched therein and around the hole H the pad isstrengthened by lines of stitching S. The pad shown in Figure 2 isconstructed in exactly the same manner as the pad shown in Figure 1 withthe exception that the entire outer surface of the pad is coated with alayer of grits such as emery, carborundum or sand. A portion of suchcoating is shown at C but it is to be understood that the entire surfaceof the pad is coated in the manner indicated at C.

The pad shown in Figure 3 is designated at P w and is also similar tothe pad shown in Figure 1, with the exception that in addition to thewool and hair, particles of steel wool are embodied in the structure ofthe pad, these particles being indicated at W. p

The pad illustrated in Figure 3 presents an abrasive surface which iswell adapted to. cut or abrade away pits and a portion of the surfaceror filler applied to an automobile body or the like. For the samepurpose the pad shown in Figure 2 may be employed. In polishing orrubbing down the finishing coat the pad shown in Figure 1 is employed.The pad shown in Figure 1 is also adapted for use in simonizing orpolishing automobile bodies.

It is to be understood that the pads of Figures 1, 2 and 3 are appliedand secured in any suitable manner to the rotating head of a suitablemachine or tool and that the operator, in using the pads, applies therotating surface thereof to the workand while so applied moves the pad.back and forth across the work.

Pads constructed in accordance with the present invention are not onlyhighly eflicient in operation but are extremely durable.

layers of fibers needled to at least one intervening fabric stay, andlines of stitching reinforcing at least the periphery of the pad.

2. A polishing pad consisting of two layers of fibers needled to anintervening stay and doubled upon each other and needled to a secondstay in termediate the doubled portions.

3. As an article of manufacture, material for use in forming polishing,bufiing, or-similar pads consisting of a plurality of layers of fibersneedled to at least one intervening fabric stay and steel wool particlesin one surface at least of the fabric.

4. As an article of manufacture, a fabric consisting of two layers offibers needled to an intervening stay and doubled upon each other andneedled to a second stay intermediate the doubled portions, one surfaceat least of said fabric having abrading material associated therewith.

WILLIAM G. RASCH. JAMES A. MALCOLM.

